Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design.
Model | Size | Wall |
---|---|---|
4OFS | 4" | 2" x 4" |
5OFS | 5" | 2" x 4" |
4OFS6 | 4" | 2" x 6" |
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